[clang] [clang] Catch missing format attributes (PR #70024)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

There are multiple distinct issues that were caught:

build failure -- https://lab.llvm.org/buildbot/#/builders/72/builds/1123
sanitizer failure -- https://lab.llvm.org/buildbot/#/builders/164/builds/920
different failure from above -- https://lab.llvm.org/buildbot/#/builders/193/builds/896
etc

You should go through each of the failures individually to ensure you've addressed all the concerns. I would not remove test coverage, but instead repair the tests.

https://github.com/llvm/llvm-project/pull/70024